Mechanical sheet-feeding device for folding, printing, and like machines



7 G. SPIESS MECHANICAL SHEET FEE DING DEVICE FOR FOLDING, PRINTING, ANDLIKE MACHINES FiledDec. 19, 1924 2 Sheets-Sheet l Gear ,July 20 1926.

G. SPIESS MECHANICAL SHEET FEEDING DEVICE FOR FOLDING, PRINTING, ANDLIKE MACHINES Filer! Dec. 19, 1924 2 shuts-Shut 2 Patented July 20,1926.

UNITED STATES 1,593,224 PATENT OFFICE.

GEORG SPIESS, OF LEIPZIG, GERMANY.

.MEGHANICAL SHEET-FEEDING DEVICE FOR FOLDING, PRINTING, AND LIKEMACHINES.

"Application tiled December 19, 1924, serial No. 756,909, and in GermanyMarch 22, 1924.

' This'invention relates to a mechanical sheet feeding device for use infolding,

printing and like machines being of the type In whichfor mechanicalfeeding a hoisting table is employed above the table for manual feeding,and it has for its object to enable the hoisting and lowering of thefeed table to be effected Without disconnecting the driving connectionsbetween the operating devices arranged on the feed table and theirstationarily'journalled driving parts so that the devices arranged onthe table should durmg hoisting perform either no movement or be movedonlyto an immaterial -extent. A further object of the connection is toavoid the provision for the operating devices arranged on the feed tableof cumbersome driving mechanism with multiple joints which would readilygive rise to interruptions.

According to this invention the above object is attained by arrangingthe axis of rotation of the driving parts for the operating deviceslocated on the movable feed table such as cam mechanism or cam devicesin the form of cam discs, eccentrics, grooved discs or the like so as todefinitely or approximately coincide with the axis of oscillation of thefeed table or so that the feed table is arranged to oscillate about theaxis of said driving parts. In such an arrangement employing grooved camdiscs for driving the operating devices located on the feed table saiddevices are not influenced during the hoisting if the roller or rollersactuated by the cam groove or a rod or the like controlled thereby aresubjected to the effect of the concentric portion of the cam groove.Only an insignificant movement of the operating devices takes place whenthe cam 4 rollers, rods or the like, during the hoisting operatlon comeunder the influence of the nonconcentric portion of the cam groove,"which however is not generally the case.

According to the invention moreover the lever gear employed for theconversion of .the movement directed longitudinally of the table into a-movement transversely to the direction of feed required for suchdevices fasfor example the movableside registering members of the sideregistering devices is so constructed that one of the lever arms whichare at right angles to one another, at the end engagin the other arm isrotatable about a pin whic is at right angles to its axis of oscillationwhereby the friction between the link members oscillating in rectangularplanes is considerably reduced.

In the place of such lever arrangement use may be made with advantagefor the conversion ,of the movement longitudinally of the table into atransversely directed movement for the operation of the side registeringmember of a gear comprising a toothed rack and a toothed gear wheelconnected to which, crank fashion, is a rod driven from the cam disc.

The accompanying drawings illustrate the invention by way ofexample'showing, however, for the sake of greater clearnessthe drivingarrangement only for one operating device arranged on the table, namelythe side registering member.

Figs. 1 and 2 illustrate a'sheet feeding mechanism with a hoisting feedtable, omitting, however, all details unnecessary for the understandingof the arrangement, Fig. 1 being a lateral elevation and Fig. 2 a planview of the parts in their working position for effecting the mechanicalfeed.

Fig. 3 is an elevational view of the mechanism shown in Fig. lshowing'the feed table hoisted to its upper position. I

Figs. 4 and 5 show respectively an elevationand plan view of a modifiedmechanlsm provided with a toothed gear for drivmg the side registeringmembers. g

Figs. 4 and 4' illustrate a detail of F1gs. 4 and 5 in elevation andplan view on a slightly enlarged scale.

Fig. 6 is a plan view similar to Flg. 5 showing a different position ofthe parts.

Fig. 7 is a lateral elevation of a further modification though similarto Fig. 4 with the difference however that the driving gear is licatedon the underside of the feed table, an

Figs. 8 and 9 illustrate a detail of Fig. 7 in plan view andcross-section respectively.

In the various figures 1 is the framework of the sheet feeding device, 2the table for manual feeding, and 3 the hoisting table for mechanicalsheet feeding which is ada ted to oscillate about the axis of shaft 4.Arranged on the shaft 4 is a- .cam disc 5 which is driven by means of asprocket gear 6 from a main driving shaft Loosely rotatable about theshaft 4 is a member 8 guided in which is a pitman 9. This pitman ing thecam other end 1s which is conriected.to an oscillating shaft 14. Thisshaft is journalled in a bracket 12 arranged at the forward end of thefeed table 3. The lower end of the lever 11 is provided with aneye-piece 13 having its aperture at right angles to the oscillatingshaft 14. Secured in the said aperture is a fork 15 by means of a pin soas to be rotatable therein. The prongs of the fork 15 embrace the end ofan arm of a rocker 17 fulcrumed at 16 and rigidly connected to a leverarm 19 of which the other end is attached to the slide 18 of the sideregistering member (not shown), which is movable in transversedirection.

During the hoisting of the feed table 3 no movement is imparted to theoperating parts arranged on the forward end of the table becausetheroller 10 of the pitman 9 travels in the section of the cam groove whichis concentric with the axis of oscillation. The lever arms 11 and 17capable of oscillating in planes at right angles to one another are freeto perform relative movements since the fork 15 by means of its prongscan readily adapt itself to the movement of the lever 17.

The adjustment of the side registering member drive for the registrationof the sheets in regard to the opposite side registering surface iseffected by disconnecting the pitman 9 from lever arm 11 and connectingit to an upwardly directed lug 20 on lever 11 which lug to that end isprovided with a connecting eye-piece 21.

In the place of the parts 11, 15, 17 and 19 use may be made as shown inFigs. L-7 of a toothed gear comprising a toothed rack connected to atransversely movable slide 22 of the side registering member and atoothed gear wheel 23 rotatably journalled on the table 3. This wheel 23is provided with two diametrically opposite pins 24 and 24 (see Fig. 4one of which, say 24 is flexibly connected to a rod 25 equivalent to thepitman 9 previously referred to. This rod is flexibly attached to astrap 27 guided by the eccentric block 26, which latter as in theprevious example is rotatably journalled in the hub of the grooved camdisc 5 or on the shaft 4. Driving motion is imparted to.

the cam disc from the shaft 7 by means of toothed gear wheels 28, 29 and30. The roller 10 operating in the cam groove of the disc 5 is in thiscase arranged on the strap 27. I

The adjustment of the movement of the slide 22 connected with the slideregistering member which is necessary for the registration of thesheets'ag'ainst the other side registering surface in the printing ofthe second page of the sheet, is effected by the connection of'thepitman 25 with the other pin 24f of the gear wheel 23.

- Fig. 7 illustrates a constructional formof the device which differsfrom the construction shown in Figs. 4 and 5 by the arrangement of thedriving gear for the side registering member on the under-side of thefeed table 3. The shaft 4.- and the cam disc 5 are here likewisearranged substantially below the upper feed table and the strap 31 isprovided with an extension '32 which is guided in a lug 33. arranged onthe under-side of the feed table and is flexibly connected to the pitman34. The latter is attached to a pin projecting from a gear wheel 35arranged on the under-side of the feed table.

For the purpose of a ready adjustment of the side registering memberdrive for the registration of the sheets against the other sideregistering surface during the printing of the second page the strapinthis constructional form of the device is provided with two rollers 36and 36 both adapted to be individually retracted into openings on theinner-side of the strap so as to enable only one of these rollers to bebrought into operative engagement with the cam groove as shown in Figs.8 and 9. i The roller stems 37 equipped with push buttons as shown areeach provided with two ring shaped grooves adapted to receive springactuated pins 38 for the purpose of safe-guarding the contrivance in itsadjusted position.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In a sheet feeding device, the combination of avertically oscillating feed table, a rotary opera-ting element havingits axis of rotation coinciding or substantially coinciding with theaxis of oscillation of the table, said element having an acting surfacein part concentric with and in part eccentric to said axis of rotation,a reciprocatory member in engagement with said surface so as tobeactuated thereby, and sheet controlling means operable by saidreciprocatory member.

2. In a sheet feeding device, the combination of a verticallyoscillating feed table, a rotary operating element having its axis ofrotation coinciding or substantially coinciding with the axis ofoscillation of the table, said element having an acting surface in partconcentric with and in part eccentric to said axis of rotation, areciprocatory member in engagement with said surface so as to beactuated thereby, a second reciprocatory member and motion translatingmeans between said members.

' 3. In a sheet feeding device, the combination of a verticallyoscillating feed table, 1 rotary operating element having its axis ofoscillation coinciding or substantially coinciding with the axis ofoscillation of the in part concentric with and in part eccentric to itssaid axis of oscillation, a pitinan actuated by said acting surface ofsaid rotary operating element, and sheet controlling means actuated bysaid pitman.

4. In a sheet feeding device, the combination of a driven shaft, a feedtable mounted to oscillate about an axis concentric with said shaft, arotary operating element fixed to the shaft for rotation therewith andhaving an acting surface in part concentric with and in part eccentricto its axis of rotation, at pitman actuated by said acting surface ofsaid rotary element, a sheet controlling member, and interconnectingmotion transmitting means between said pitman and sheet controllingmember.

5. In a sheet feeding device, the combination of a verticallyoscillating feed table, an operating element rotating on an axisconcentric with the axis of motion of the table, a reciprocatory memberoperatively connected with said element so as to be actuated thereby,and a reciprocable sheet controlling element operative by saidreciprocatory member, said operative connection between the operatingelement and reclprocatory member being variable in action for reversingthe direction of motion of said member.

6. In a sheet feeding device, the combinareceiving working motion fromsaid acting surface of said rotary operating element, and sheetcontrolling means actuated by the pitman.

7. In a sheet feeding device, the combination of a drive shaft, a feedtable mounted to swing on an axis concentric with said shaft, areciprocating element, driving means actuated by the shaft forreciprocating said reciprocating element, a reciprocatory sheetcontrolling member, and a connecting means between said reciprocatorymembers whereby reciprocatory motion is transmitted from one to theother.

8. In a sheet feeding device, the combination of a driving shaft, aswinging feed table movable on an axis concentric with the shaft, :1-pitman, driving means carried by the shaft for actuating said pitman, areciprocating sheet controlling member mounted on the feed table, rockerelements to which the pitman and reciprocatory sheet controlling memberare coupled, and an oscillatory connection between said elements.

9. In a sheet feeding device, the combination with a pivotally supportedfeed table, and mechanism for actuating the same, of sheet controllingmeans mounted on said table, and actuating means forsaid sheetcontrolling means, said actuating means being actuable by said actuatingmechanism and being so coupled thereto so as to render their workingconnection inoperative for actuation of said sheet controlling means inone direction of movement of the feed table.

In testimony whereof I have affixed my signature.

GEORG sPIEss;

